﻿using System;
using System.Collections.Generic;
using System.Text;

namespace Demo0524
{
    class Disk
    {
        private string brand;//品牌

        public string Brand { get => brand; set => brand = value; }
        public Disk() { }
        public Disk(string brand) 
        {
            this.brand = brand;
        }

    }
}
